USER'S GUIDE ® Vaisala HUMICAP Humidity Module HMM100 M211024EN-C
PUBLISHED BY Vaisala Oyj P.O. Box 26 FI-00421 Helsinki Finland Phone (int.): +358 9 8949 1 Fax: +358 9 8949 2227 Visit our Internet pages at www.vaisala.com © Vaisala 2013 No part of this manual may be reproduced, published or publicly displayed in any form or by any means, electronic or mechanical (including photocopying), nor may its contents be modified, translated, adapted, sold or disclosed to a third party without prior written permission of the copyright holder.
_________________________________________________________________________________ Table of Contents CHAPTER 1 GENERAL INFORMATION ............................................................................ 5 About This Manual ................................................................... 5 Contents of This Manual ....................................................... 5 Version Information ............................................................... 6 Related Manuals .............................
User's Guide _______________________________________________________________________ Terminal Application Settings .............................................. 28 List of Serial Commands ....................................................... 30 Device Information and Status .............................................. 31 Show Device Information..................................................... 31 Show Quantities ..................................................................
_________________________________________________________________________________ CHAPTER 6 TROUBLESHOOTING ................................................................................. 61 Analog Output Error Notification .......................................... 61 Solving Typical Problems...................................................... 62 Technical Support .................................................................. 63 Product Returns .....................................................
User's Guide _______________________________________________________________________ List of Figures Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12 Figure 13 Figure 14 Figure 15 Figure 16 Figure 17 Figure 18 HMM100 Humidity Module with Probe ..................................... 12 Probe Types ............................................................................. 13 Filter Types .........................................................
Chapter 1 _________________________________________________________ General Information CHAPTER 1 GENERAL INFORMATION This chapter provides general notes for the manual and the product. About This Manual This manual provides information for installing, operating, and maintaining Vaisala HUMICAP® Humidity Module HMM100. Contents of This Manual This manual consists of the following chapters: - Chapter 1, General Information, provides general notes for the manual and the product.
User's Guide _______________________________________________________________________ Version Information Table 1 Manual Code M211024EN-C M211024EN-B Manual Revisions Description November 2013. Removed RHCAL command. Added information on which parameter changes must be saved separately and which are saved automatically. October 2012. Previous version. Added VHP filter option and new pictures to the installation instructions, edited commands and technical specifications.
Chapter 1 _________________________________________________________ General Information Safety The HMM100 module delivered to you has been tested for safety and approved as shipped from the factory. Note the following precautions: WARNING Ground the product, and verify installation grounding periodically to minimize shock hazard. CAUTION Do not modify the unit. Improper modification can damage the product or lead to malfunction.
User's Guide _______________________________________________________________________ Regulatory Compliances The HMM100 is in conformity with the provisions of the following EU directive(s): - RoHS Directive - WEEE Directive The electromagnetic compatibility of the HMM100 has been tested according to the following product family standard: EN61326-1 Electrical equipment for measurement, control and laboratory use - EMC requirements - for use in light industrial environments.
Chapter 1 _________________________________________________________ General Information Warranty Visit our Internet pages for standard warranty terms and conditions: www.vaisala.com/warranty. Please observe that any such warranty may not be valid in case of damage due to normal wear and tear, exceptional operating conditions, negligent handling or installation, or unauthorized modifications. Please see the applicable supply contract or Conditions of Sale for details of the warranty for each product.
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Chapter 2 ___________________________________________________________ Product Overview CHAPTER 2 PRODUCT OVERVIEW This chapter introduces the features, advantages, and the product nomenclature of the HMM100. Introduction to HMM100 Series Humidity Modules The HMM100 series humidity measurement modules are open frame modules intended for integration into environmental chambers and other chambers where high temperature tolerance is important.
User's Guide _______________________________________________________________________ 0905-042 Figure 1 HMM100 Humidity Module with Probe Basic Features and Options - Vaisala HUMICAP® 180R humidity sensor - Plastic or stainless steel probe - Analog output options: - 4 ... 20 mA loop powered (2-wire output model) - 0 ... 20 mA or 0 ... 1 / 5 / 10 V (3-wire output model, user-configurable using service port) - Cable lengths: - 0.65 m, 1.55 m, or 2.9 m for plastic probe - 1.55 m or 2.
Chapter 2 ___________________________________________________________ Product Overview Probe Types The HMM100 can be ordered with a plastic or stainless steel probe. The plastic probe is suitable for most applications. Both probe types have the same operational temperature range. Note that the operational temperature range is also affected by the filter; see section Filter Types on page 14.
User's Guide _______________________________________________________________________ Filter Types The available filters for HMM100 are shown in Figure 3 below. All filters are 12 mm in diameter, and can be used in both the plastic and stainless steel probe. Note the operational temperature range of each filter. For order codes, see section Options and Accessories on page 68. 1204-001 Figure 3 Filter Types Table 4 Filter Properties No.
Chapter 2 ___________________________________________________________ Product Overview Catalytic VHP Filter Vaporized hydrogen peroxide (VHP) is a gaseous form of hydrogen peroxide that is commonly used in decontamination and sterilization of environmental chambers. Hydrogen peroxide has relatively low saturation pressure which increases the possibility of saturation when used in humid conditions. When saturation conditions occur, liquid hydrogen peroxide will form on surfaces in the decontaminated space.
User's Guide _______________________________________________________________________ Installation Accessories For order codes of the installation accessories, see section Options and Accessories on page 68. Probe Mounting Flange The probe mounting flange is used to seal the cable pass-through in the chamber wall. The flange can also be used to hold the probe itself, in case the probe cannot be mouted on the chamber wall otherwise.
Chapter 2 ___________________________________________________________ Product Overview Mounting Bracket with Lid The optional mounting bracket includes a metal backplate and a plastic lid for the component board. The bracket does not provide IP rated protection. The bracket can be installed on a DIN rail.
User's Guide _______________________________________________________________________ Module Housing (IP65) The optional module housing is an IP65 rated housing. The module is installed inside the housing in a mounting bracket (provided with the housing). The housing has two cable glands. A coaxial plug is provided for sealing the gland for the probe cable.
Chapter 2 ___________________________________________________________ Product Overview Probe Mounting Clamp The optional mounting clamp makes it easy to install the probe on the wall of the measurement environment. The probe can be detached for calibration simply by loosening the lower screw. Installing the entire probe in the measurement environment prevents heat conduction to the sensor, and is the recommended installation method. To mount the HMM100 probe to the mounting clamp: 1.
User's Guide _______________________________________________________________________ 3. Place the clamp to the intended location and secure the upper clamp part with a screw. See Figure 9 below. 1209-003 Figure 9 4. 5. Securing the Upper Clamp Part Place the probe in the clamp. Tighten the lower clamp part with a screw as shown in Figure 10 below.
Chapter 3 ________________________________________________________________ Installation CHAPTER 3 INSTALLATION This chapter provides you with information that is intended to help you install the HMM100.
User's Guide _______________________________________________________________________ Installing the Module NOTE The measurement probe with cable is attached to the component board at Vaisala. Do not disconnect and reconnect the cable. 1. 2. NOTE Attach the module securely using the mounting holes on the corners of the component board. Use the optional mounting bracket (Vaisala order code 225979) if needed. Make sure that the module has a good earth connection from the plated mounting hole.
Chapter 3 ________________________________________________________________ Installation Installing the Probe 1. Select the mounting location for the probe: - The probe should be entirely in the measurement environment, with sufficient distance to the outer walls of the chamber or duct. Air should flow freely around the probe. - The probe location should represent well the environmental or process conditions, and it should be as clean as possible. 2. Install the probe in the location.
User's Guide _______________________________________________________________________ Wiring 2-wire Output See Figure 13 below. Provide a 24 VDC supply voltage (see Figure 18 on page 67). 0905-047 Figure 13 Wiring for 2-wire Output 3-wire Output See Figure 14 below. Provide the required supply voltage according to the output type: 10 ... 35 VDC or 19.2 ... 28.8 VAC for 0 ... 20 mA, 1 / 5 V output 15 ... 35 VDC or 19.2 ... 28.8 VAC for 0 ...
Chapter 3 ________________________________________________________________ Installation Verifying the Installation To verify that the module has been installed correctly: - Power up the module and check the output reading, preferably using a humidity reference. - Optional: connect to the service port and use the ATEST command to set the analog output to desired voltage or current. Verify that your measurement system shows the correct reading.
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Chapter 4 _________________________________________________________________ Operation CHAPTER 4 OPERATION This chapter contains information that is needed to operate the HMM100. Using the Service Port The HMM100 has an RS-232 interface on the component board for service use. You can connect to it through the 4-pin M8 service port connector on the module. Vaisala offers an optional USB cable (Vaisala order code 226068) for connecting the module to your PC.
User's Guide _______________________________________________________________________ 5. The installation has reserved a COM port for the cable. Verify the port number, and the status of the cable, using the Vaisala USB Instrument Finder program that has been installed in the Windows Start menu. Windows will recognize each individual cable as a different device, and reserve a new COM port. Remember to use the correct port in the settings of your terminal program.
Chapter 4 _________________________________________________________________ Operation 6. will show you an error message instead. If this happens, restart PuTTY and check the settings. You may need to adjust the Local echo setting in the Terminal category to see what you are typing on the serial line. To access the configuration screen while a session is running, click the right mouse button over the session window, and select Change Settings... from the pop-up menu.
User's Guide _______________________________________________________________________ List of Serial Commands All commands can be issued either in uppercase or lowercase. The notation refers to pressing the carriage return (ENTER) key on your computer keyboard. Enter a to clear the command buffer before starting to enter commands. Table 6 Basic Serial Commands Command ? ?? ADDR [0 ... 99] CALCS CLOSE ECHO [ON/OFF] ENV ERRS HELP INTV [0 ... 255 S/MIN/H] OPEN [0 ...
Chapter 4 _________________________________________________________________ Operation Table 7 Advanced Serial Commands Command ACAL AMODE ASEL [RH/TD] Description Calibrate analog output Set/show analog output mode Set/show analog output quantities and scaling Test analog output; forces the output ot the given value Set/show calibration info Calibrate humidity measurement after Calibrate temperature measurement Restore all module settings to factory defaults Show user adjustment parameters Set user adju
User's Guide _______________________________________________________________________ Show Quantities The CALCS command shows the abbreviations of the quantities measured by HMM100: CALCS Example: >calcs RH Td T > Show Calibration Info Use the CALINFO command to show or set the calibration info field.
Chapter 4 _________________________________________________________________ Operation Example (analog output in error state, output quantity RH, analog output mode 0 ... 10V): >status Channel 0: Status Notification Level Lo Level Hi Error level : : : : : ERROR ON 0 100 0.000000 Show Firmware Version VERS Example: >vers HMM100 / HM100 / VAISALA / 1.1.10.
User's Guide _______________________________________________________________________ Set Output Interval Use the INTV command to show or set the output interval of the serial line measurement messages (applies when R command or RUN mode is used). The shortest output interval is one second. This command has no effect on the operation of the analog output. NOTE Remember to save the changes! INTV [n xxx] where n xxx = = Time interval in range 1 ...
Chapter 4 _________________________________________________________________ Operation Calibration Commands Commands that have to do with calibration on the serial line are described below. For the calibration procedures, see section Calibration on page 53. Calibrate Temperature Measurement Use the CT command to perform a one-point or two-point temperature (T) calibration. CT When performing a one-point calibration, you need to place the probe in a single temperature reference.
User's Guide _______________________________________________________________________ Calibrate Humidity Measurement Use the CRH command to perform a one-point or two-point correction to the humidity measurement of the module. This command changes the offset and gain of the measured capacitance, and therefore affects humidity measurement over the entire temperature range. Take care when making this adjustment, and ensure you make a note of the existing values before adjusting them.
Chapter 4 _________________________________________________________________ Operation View User Adjustment Parameters Use the L command to view the current user adjustment parameters and trimmer adjustment. This command is useful for checking the currently applied correction.
User's Guide _______________________________________________________________________ Example (shows default values): >li Cp offset : 0 Cp gain : 1 RH offset : 0 RH gain : 1 T offset : 0 T gain : 1 >save Saving settings...done > ? ? ? ? ? ? Zero the Trimmers After physically turning the trimmers to zero, use the ZERO command to set the correction by trimmers to exactly zero. It is easy to introduce a small, unwanted correction even if trying to zero the trimmers exactly.
Chapter 4 _________________________________________________________________ Operation Calibrate Analog Output Use the ACAL command to calibrate the currently active analog output mode. You must use this command if you change the analog output mode using the AMODE command. ACAL After you give this command, the analog output of the module is set to the low limit of the selected output (voltage or current). Measure the output and enter the measured value.
User's Guide _______________________________________________________________________ Configuring Serial Line Operation Set Serial Line Settings Use the SERI command to show or set the serial line settings. Use the SAVE command after changing the settings to store them. The new settings will be taken into use when the module is reset or powered up.
Chapter 4 _________________________________________________________________ Operation Set Module Address To operate in the POLL mode, the module must have an address. If multiple modules share the same serial line, each module must have a different address. For a description of the serial interface modes, see section Set Serial Interface Mode below. ADDR [nn] where nn NOTE = address (0 ... 99) Remember to save the changes! Example: >addr 1 Address : >save Saving settings...
User's Guide _______________________________________________________________________ The polling mode can be used when more than one module is connected to one serial bus. When set to POLL state, the modules communicate one at a time when the specific module address is called on the serial line. See descriptions of the commands ADDR on page 41 and OPEN on page 48.
Chapter 4 _________________________________________________________________ Operation NOTE You can use the Vaisala Humidity Calculator to simulate the effect of pressure change to dewpoint. The Humidity Calculator can be found at: www.vaisala.com/humiditycalculator Set Temporary Pressure Compensation Value Use the XPRES command to show or set the temporary ambient pressure value for pressure compensation. This value is cleared to 0.0 at reset. XPRES [x.xxxx] where x.
User's Guide _______________________________________________________________________ Configuring Analog Output Set Analog Output Mode Use the AMODE command to show or set the operation mode of the analog output. This command is only useful with the 3-wire output module, as the output on the 2-wire model is always 4 ... 20 mA (loop powered). NOTE If you change the analog output mode, you must calibrate the new mode using the ACAL command. See section Calibrate Analog Output on page 39.
Chapter 4 _________________________________________________________________ Operation Select Analog Output Quantity and Scaling Use the ASEL command to show or select the quantity output by the analog channels, and the scaling that is used. If you do not enter scaling limits, default values are used.
User's Guide _______________________________________________________________________ selected analog output mode (voltage or current) so you do not have to specify the unit. Before testing, check the currently set analog output mode using the AMODE command. After testing the output, give the ATEST command again to exit the test mode. ATEST [xxx] where xxx = Analog channel output value (V or mA) Example: >atest 2.5 2.
Chapter 4 _________________________________________________________________ Operation Other Commands Display Command List Use the HELP command to display a list of the currently available commands. If the PASS command has not been used, only the basic commands are available. HELP Enable Advanced Commands Use the PASS command to enable the advanced commands. PASS [passcode] where passcode = Use "1300" to enable the advanced commands.
User's Guide _______________________________________________________________________ Connecting to the Module in POLL Mode Use the OPEN command to connect to a module that is in POLL mode. OPEN [aa] where aa = address (0 ... 99) Example: >open 1 HMM100: 1 line opened for operator commands > Closing the Connection in POLL Mode The CLOSE command closes the connection to the module.
Chapter 4 _________________________________________________________________ Operation Restore Saved Settings Use the RESTORE command to restore saved settings to the module. All unsaved changes will be lost. RESTORE Example: >restore Restoring default settings...done > Reset the Module Use the RESET command to reset the module. Upon reset or power-up, the module? enters the serial mode that has been set with the SMODE command.
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Chapter 5 _______________________________________________________________ Maintenance CHAPTER 5 MAINTENANCE This chapter provides information that is needed in basic maintenance of the HMM100. Changing the Filter The filter on the probe should be replaced when it is damaged or dirty. Do not attempt to clean the filter using compressed air, solvents, or mechanical action. Wiping the filter may block its pores and/or deposit residue on the filter. 1. 2. Turn the filter counter-clockwise to loosen it.
User's Guide _______________________________________________________________________ 1. 2. 3. 4. Remove the filter from the probe by turning it counter-clockwise. Remove the damaged sensor and insert a new one. Handle the new sensor by the plastic socket. DO NOT TOUCH THE SENSOR PLATE. Perform a calibration and adjustment using the CRH command as instructed in section Humidity Calibration (CRH) on page 58. Attach a new filter on the probe.
Chapter 5 _______________________________________________________________ Maintenance Calibration The recommended calibration interval is one year. You should also perform a calibration if the HMM100 does not appear to be within the specified accuracy. The HMM100 can be adjusted in two ways: - Using the onboard trimmers. This method requires no serial connection, only a small Phillips head screwdriver and a suitable humidity reference. The trimmers can adjust up to ± 5% of reading. - Using serial commands.
User's Guide _______________________________________________________________________ Calibration and Adjustment Using Trimmers HMM100 series modules have two trimmers mounted on the component board. These trimmers allow for easy adjustment of the offset and gain of the humidity measurement. The modules are shipped with the trimmers centered. Turning the trimmer counter-clockwise will decrease the offset or gain, and turning clockwise will increase it. The adjustment range is ± 5% for both offset and gain.
Chapter 5 _______________________________________________________________ Maintenance 1. 2. 3. 4. 5. 6. Note the current position of the trimmers. Insert the probe in the LiCl salt chamber of the humidity calibrator (11 %RH), and wait for 20 – 40 minutes for the reading to stabilize. If necessary, adjust the offset trimmer using a small Phillips head screwdriver to achieve the output reading that corresponds to 11 %RH. For 4 ... 20 mA output, the reading should be 5.76 mA. For 0 ...
User's Guide _______________________________________________________________________ Temperature Calibration (CT) The procedure below describes a temperature (T) measurement calibration using serial line commands. You can use the procedure to do a one-point calibration (offset) or a two-point calibration (offset and gain). For two-point calibration, the second reference point must be at least 20 ºC warmer than the first.
Chapter 5 _______________________________________________________________ Maintenance 8. Give the CT command. The output from the command shows the currently measured T value, and prompts you to enter the value of the reference 1. This is the reference on the colder end, which produces the offset correction for the measurement. 9. You now have three choices: - To apply the correction, type the temperature of the reference in degrees celcius and press ENTER.
User's Guide _______________________________________________________________________ Humidity Calibration (CRH) Adjusting the capacitance measurement affects humidity measurement accuracy across the entire temperature range. Take care when making this adjustment. CAUTION Be sure to write down the current capacitance adjustment parameters (visible with the L command) so that you can restore them manually if necessary.
Chapter 5 _______________________________________________________________ Maintenance 6. 7. 8. 9. Use the PASS command to enable the advanced commands: >pass 1300 Turn both trimmers to zero using the Phillips head screwdriver, and use the ZERO command to set their correction to exactly zero: >zero Insert the probe in the LiCl salt chamber of the humidity calibrator (11 %RH), and wait for 20 – 40 minutes for the reading to stabilize. Give the CRH command.
User's Guide _______________________________________________________________________ 14. 15. Use the L command to verify that the new user adjustment parameters are in use: >l Measure the value of the analog output to verify that the measurement is OK.
Chapter 6 ____________________________________________________________ Troubleshooting CHAPTER 6 TROUBLESHOOTING This chapter describes the analog output error notification behavior, some common problems, their probable causes and remedies, and provides contact information for technical support. Analog Output Error Notification If the module is unable to measure due to an error, the analog output will be set to an error level.
User's Guide _______________________________________________________________________ Solving Typical Problems You can check the error message via the serial interface by using the ERRS command. In case of constant error, please contact Vaisala technical support. See section Technical Support on page 63.
Chapter 6 ____________________________________________________________ Troubleshooting Problem or Message Cannot connect to serial line, current serial settings of the module are unknown. Any of the following errors is active: Likely Causes and Solutions Perform the following steps to connect: 1. Set your terminal settings to 19200 8 N 1 (the default settings of the module). 2. Connect to the service port of the module. 2. Power up the module, and type "z" on the serial line at least five times. 4.
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Chapter 7 _____________________________________________________________ Technical Data CHAPTER 7 TECHNICAL DATA This chapter provides the technical data of the HMM100. Specifications Performance Relative Humidity Measurement range Accuracy (including non-linearity, hysteresis, and repeatability) Temperature range 0…90 %RH 90…100 %RH Temperature range 0…90 %RH 90…100 %RH 0 ... 100 %RH -20 ... +40 ºC (-4 ... +104 ºF) ±2 %RH ±3 %RH -40 ... -20 ºC (-40 ... -4 ºF), +40 ... +180 ºC (+104 ... +356 ºF) ±2.
User's Guide _______________________________________________________________________ Operating Environment Operating temperature range Component board Plastic probe Stainless steel probe Plastic grid filter Membrane filter Porous PTFE filter Stainless steel sintered filter Probe mounting flange Electromagnetic compatibility -5 ... +55 ºC (+23 ... +131 ºF) -70 ... +180 ºC (-94 ... +356 ºF) -70 ... +180 ºC (-94 ... +356 ºF) -20 ... +80 ºC (-4 ... +176 ºF) -20 ... +80 ºC (-4 ... +176 ºF) -70 ...
Chapter 7 _____________________________________________________________ Technical Data 1210-006 Figure 18 Loop Supply Voltage Versus Loop Resistance Mechanics Service cable connector Wire size for screw terminals Probe cable lengths Plastic probe Stainless steel probe Materials Plastic probe Stainless steel probe Probe mounting clamp Probe mounting flange Mounting bracket bottom plate Mounting bracket lid Module housing M8 series 4-pin (male) 0.5 ... 1.5 mm2 0.65 m, 1.55 m, 2.9 m 1.55 m, 2.
User's Guide _______________________________________________________________________ Options and Accessories Description Humidity sensor Membrane filter Plastic grid filter Porous PTFE filter Stainless steel sintered filter Catalytic VHP filter Mounting bracket with lid Module housing (IP65) Probe mounting flange Probe mounting clamp set (10 pcs) USB cable Item code HUMICAP180R 10159HM 6221 219452SP HM47280SP 231865 225979 226060 226061 226067 226068 68 ___________________________________________________
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